400464250 has 16 divisors (see below), whose sum is σ = 749669544. Its totient is φ = 160185600.

The previous prime is 400464241. The next prime is 400464269. The reversal of 400464250 is 52464004.

It can be written as a sum of positive squares in 4 ways, for example, as 159997201 + 240467049 = 12649^2 + 15507^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 800679 + ... + 801178.

Almost surely, 2^400464250 is an apocalyptic number.

400464250 is a deficient number, since it is larger than the sum of its proper divisors (349205294).

400464250 is a wasteful number, since it uses less digits than its factorization.

400464250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1601874 (or 1601864 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 400464250 is about 20011.6028843269. The cubic root of 400464250 is about 737.0912414569.

The spelling of 400464250 in words is "four hundred million, four hundred sixty-four thousand, two hundred fifty".